CN1924281A - Full-hydraulic multifunctional driller for gas extraction, drainage and discharge - Google Patents

Abstract

This invention relates to one whole hydraulic oil discharge multi-function drilling machine, wherein, the rack is connected to column frame beam through wire beam screw structure and the column frame beam two ends are connected to column through wire beam; the supportive bar is composed of three sections with middle section is wire bar and other two set with T shape socket; the middle socket and rack outside and down side are set with copper board; the middle socket and drag board limit are set with gap adjust wedge block.

Description

Fully hydraulic gas pumping and discharging multifunctional drilling rig

technical field

The invention belongs to the technical field of drilling equipment for soil layers or rocks, and in particular relates to a fully hydraulic gas pumping and discharging drilling rig.

Background technique

The gas drainage drilling rig is mainly used for drilling gas drainage holes, grouting fire extinguishing holes, coal seam water injection holes, outburst prevention and pressure relief holes, geological exploration holes or other engineering holes in coal mines. At present, the full hydraulic drilling rig used in small and medium cross-section gas drainage tunnels or drilling sites (section area less than 6.5m ² , height less than 2.5m, width less than 2.8m) mainly consists of pump station, power head, frame, column frame, drill It is composed of six major parts including tools and console. During operation, the pump station and the console are placed on the ground, the frame is positioned on the column frame, the power head is limited on the frame by the carriage, the carriage and the frame together constitute the guiding and supporting mechanism of the power head, and the front end of the power head The output shaft transmits power to the drill pipe through the hydraulic chuck and water braid, and the front and rear drill pipes are connected by threads. The front end of the frame is equipped with a hydraulic clamp to guide and clamp the drill pipe. The drilling rig adopts longitudinal Mobile, horizontal installation for drilling operations. There are following defects in this drilling rig:

1. When adjusting the working height and inclination angle of the drilling rig, it is necessary to disassemble and assemble the connecting part between the drilling rig frame and the column frame or between the frame and the support rod, which is time-consuming and laborious, and cannot realize online stepless adjustment. Seriously affect work efficiency;

2. The structure of the guide support mechanism of the power head is too simple. The frame adopts a U-shaped channel steel structure with the opening facing upwards. The upper ends of the U-shaped channel steel are bent vertically outwards to form the guide rail of the carriage. Elastic deformation is easy to occur in the center, which makes the guiding accuracy poor; the upper and lower copper plates of the guide rail are easy to wear, resulting in intermittent increase, and cannot be eliminated and compensated. When the drilling rig is working, the vibration is large, and the drill pipe is easy to break. Can only be replaced offline, which is labor-intensive and time-consuming, affecting work efficiency;

3. The chuck is a normally closed structure, and the disc spring is always in a compressed state when it is tightened and loosened. Over time, the disc spring is prone to aging and failure, so that it cannot reliably clamp the drill pipe; in the actual application process During the process, the mud will enter and deposit in the end cover of the cylinder block through the gap between the slip seat and the hollow shaft, causing the disk spring to be stuck by the mud, and the chuck cannot be released normally; the chuck and water The braids are independent of each other. During the drilling operation of the drilling rig, every time a drill pipe is added, it is necessary to perform thread tightening work between the water braid shaft and the newly added drill pipe. When drilling out, the water section needs to be removed; the drill pipe When screwing on and off the water braid shaft through threads, manual assistance is required, there are many processes, the work efficiency is low, the labor intensity of the workers is high, and work-related accidents are prone to occur during operation;

4. The hydraulic gripper has a two-claw structure. The housing of the gripper is not only the mounting bracket of the slips, but also the hydraulic cylinder of the piston. The sealing ring of the piston is easy to fail and cause leakage during use. The slips only move from two directions. Acting on the drill pipe, there is less friction between them, resulting in unreliable clamping. The movement of the two slips is difficult to achieve synchronization, which often causes the center formed by the two slips of the holder to be inconsistent with the center of the drilling rig power head, resulting in inconsistent centers between the added drill pipe and the drill pipe clamped by the holder, and difficult alignment. At the same time, It is also easy to damage the connecting threads between the drill pipes, which increases the vibration of the drilling rig and even breaks the drill pipes.

Contents of the invention

The problem to be solved by the present invention is to provide a full-hydraulic gas pumping and discharging multifunctional drilling rig that can adjust the height, operating inclination and azimuth of the drilling rig on-line, and the guiding and supporting mechanism of the power head has good rigidity, adjustable clearance, and high guiding precision.

In order to solve the above technical problems, the full hydraulic gas pumping and discharging multifunctional drilling rig of the present invention has a power head, a frame, a carriage, a chuck, a water braid, a drill pipe, a holder, a column frame and a support rod, and a column The frame is composed of left and right columns and beams. The power head is limited on the guide rail of the frame through the carriage. The frame is positioned on the column frame and the support rod. The output end of the power head is connected with the drill pipe through the chuck and the braid. The frame is connected to the beam of the column frame through the screw nut mechanism, and the two ends of the beam of the column frame are connected to the column through the screw nut mechanism. The middle section is connected, the cross-section of the guide rail of the rack is rectangular, and an inverted T-shaped middle seat is provided between the limit side plate of the carriage and the guide rail of the rack. Copper plates are arranged between them, and gap adjustment wedges in the width direction and height direction are arranged between the middle seat and the limit side plate of the carriage.

Since the screw nut mechanism is set on the frame, the connection point between the frame and the column frame beam can be adjusted back and forth online, changing the position and inclination angle of the frame, ensuring that the drill holder does not interfere with the tunnel during installation and work. And the clamper is closest to the drilling point on the tunnel, and also has a fine-tuning effect on the drilling direction; the above-mentioned purpose can also be achieved by synchronously adjusting the screw nut mechanism at both ends of the column frame beam. The screw and nut mechanisms at both ends of the beam of the column frame can also be adjusted separately to keep the beam horizontal, or to make the machine frame sideways and drill holes. The cross-section of the guide rail of the frame is rectangular, which is stronger than a single steel plate and is not easy to be elastically deformed. In addition, there is an intermediate seat between the limit side plate of the carriage and the guide rail. The three surfaces are in contact, so that the force between the pallet and the rack guide rail is more reasonable, and the guiding precision of the guide rail is higher. When the upper, lower and outer copper plates of the frame guide rails are worn and there is a gap between the carriage and the frame in the width direction or height direction, the wedge block can be adjusted through the gap between the middle seat and the limit side plate of the carriage. Adjust to keep a high-precision guiding relationship between the rack guide rail and the pallet.

The technical effect obtained by the present invention is: the adjustment of the height, operation inclination and azimuth of the drilling rig can be realized online without dismantling and assembling the drilling rig, the operation is convenient, time-saving and labor-saving, the guiding and supporting mechanism of the power head is rigid, and the gap is on-line Adjustable, high guiding precision, so that the drilling rig is always in a stable and safe state for drilling operations.

Description of drawings

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is an A-direction view of the present invention.

Fig. 3 is a structural schematic diagram of the guiding and supporting mechanism of the power head in the present invention.

Fig. 4 is a view taken along direction B of Fig. 3 .

Fig. 5 is a C-C sectional view of Fig. 3 .

Fig. 6 is a structural schematic diagram of the assembly of the chuck 4 and the braid 5 in the present invention.

Fig. 7 is a schematic structural view of the holder 7 in the present invention.

Fig. 8 is a D-D sectional view of Fig. 7 .

Detailed ways

As shown in Figures 1 to 5, the fully hydraulic gas pumping and discharging multifunctional drilling rig of the present invention has a power head 1, a frame 2, a carriage 3, a chuck 4, a braid 5, a drill pipe 6, and a holder 7 , column frame 8 and support bar 9, column frame 8 is made up of left and right column 8b and crossbeam 8a, and power head 1 is limited on the guide rail of frame 2 by carriage 3, and frame 2 is positioned on column frame 8 and support bar 9, the output end of the power head 1 is connected to the drill pipe 6 through the chuck 4 and the water braid 5. The frame 2 is connected with the beam 8a of the column frame 8 through the screw nut mechanism 10, and the two ends of the beam 8a of the column frame 8 are connected on the column 8b through the screw nut mechanism 11. The support rod 9 is composed of three sections, and the middle section 9b is Adjust the screw mandrel, and the other two sections 9a, 9c are connected with the middle section 9a through nuts. The cross-section of the guide rail of the frame 2 is rectangular, and an inverted T-shaped intermediate seat 12 is arranged between the limit side plate of the carriage 3 and the guide rail of the frame 2, and the intermediate seat 12 is connected with the outer surface and the lower surface of the guide rail of the frame 2. Copper plates 13 and 14 are arranged between the surfaces, and gap adjustment wedges 15 and 16 in the width direction and height direction are arranged between the middle seat 12 and the limiting side plate of the carriage 3 .

It can be seen from Figure 6 that the chuck 4 is composed of a cylinder 17, a piston 18, a slip seat 19, a slip 20 and a hollow shaft 21, and two independent oil pressure chambers are formed between the piston 18 and the inner wall of the cylinder 17. 22, 23, two oil ports 24, 25 are provided on the cylinder body 17 to communicate with the two oil pressure chambers 22, 23 respectively, and the slip seat 19 passes through the left and right bearings 26, 27 and the piston 18 respectively in the axial direction. touch. Since there are two left and right independent oil pressure chambers 22 and 23 between the piston 18 and the inner wall of the cylinder body 17, the piston 18 can realize two-way movement under the action of oil pressure. When the piston 18 moves to the right, the slip seat 19 is also pushed to the right. Move, under the action of the slope between the slip seat 19 and the slip 20, the slip 20 moves radially inward, thereby clamping the drill pipe or the water braid; when the piston 18 moves to the left, the slip seat 19 also moves Move to the left, slip seat 19 drives slip 20 to unclamp. Compared with the chuck with traditional normally closed structure, the clamping and loosening of the chuck is powered by hydraulic pressure, which saves the disc spring, a part that is prone to failure and quality problems, so the performance of the entire chuck is stable. Works reliably.

In Fig. 6, the water braid 5 is composed of a housing assembly 28 and a water braid shaft 29, the water braid shaft 29 is a cylindrical structure, the water braid shaft 29 is fixedly connected with the hollow shaft 21 of the chuck 4, and the hollow shaft 21 is provided with a water flow The channel 21a communicates with the water inlet channel 29a on the water braided shaft 29, and a sealing assembly is arranged in the hollow shaft 21, and the sealing assembly is positioned at the rear of the slips 20, and the sealing assembly is provided with a tunnel 30, which makes the chuck The water channel 21 a on the hollow shaft 21 communicates with the cavity at the front side of the sealing assembly in the hollow shaft 21 of the chuck. Compared with the traditional structure, the tail of the drill pipe directly extends into the chuck hollow shaft 21 during use. When the drilling rig performs drilling operations, the chuck hollow shaft 21 directly transmits power to the drill pipe through the slips 20 without passing through the water. Intermediate transfer of braid shaft 29. Therefore, when it is necessary to add drill pipes, it is not necessary to dismantle the water braids, and the slips 20 can be loosened directly, and then the threaded connection between the drill pipes can be completed quickly and conveniently; At the same time, there is no need to disassemble the water braid, which simplifies the drilling and drilling process, saves the manual auxiliary operation of screwing on and off the drill pipe and the water braid shaft, improves work efficiency, and reduces the labor force of workers. Labor intensity reduces the probability of industrial accidents. The structure of the whole drilling rig is therefore more compact and the length of the whole machine is shortened.

FIG. 6 shows that a piston guide pin 31 is arranged on the left end cover of the cylinder body 17 of the chuck 4 , and one end of the piston guide pin 31 extends into the guide hole 18 a of the piston 18 . The piston 18 moves left and right along the guide pin 31, but cannot rotate. Since the slip seat 19 and the piston 18 are in axial contact through the bearing, the use of the guide pin 31 can prevent the piston 18 from rotating together with the slip seat 19 under the friction of the bearing, thereby increasing the distance between the piston 18 and the inner wall of the cylinder body 17. The service life of the seal.

Fig. 7 shows that a triangular bracket 33 is installed on the base 32 of the holder 7, and three slips 34 uniformly distributed on the circumference are installed on the bracket 33, and each slip 34 corresponds to an independent hydraulic cylinder 35 and its connected. Three slips 34 are used to act on the drill pipe with the same force in the circumferential direction, the friction generated by the slips 34 on the drill pipe is greater, and it is easier to ensure that the geometric center of the clamping part of the three slips 34 is in line with the drilling rig. The center of the power head coincides to reduce the vibration of the drilling machine and prevent the drill pipe from being broken. The three slips 34 independently use a reliable hydraulic cylinder 35 as a power source to ensure constant clamping force, thereby ensuring that the force acting on the drill pipe during use can always reach the design value.

Fig. 8 shows that between the base 32 and the support 33 of the holder 7, a wedge block 36 is arranged, and the lug protruding from one end of the wedge block 36 is connected with an adjusting bolt 38 by a nut 37, and one end of the adjusting bolt 38 is connected to the base 32. matching threaded holes. Rotate the adjustment bolt 38, through the action of the inclined plane between the wedge block 36 and the bottom of the support 33 or the base, the effect of adjusting the height of the center of the holder 7 can be played, so as to adapt to the change of the center of the drill pipe during use.

It can be seen from Figure 4 that the left and right sides of the upper plate of the carriage 3 are symmetrically provided with two limiting side plates, thereby reducing the contact area between the carriage 3 and the guide rails of the frame 2 under the premise of ensuring strength, making it easier Free guidance is achieved, and the four corners of the carriage 3 can be individually adjusted as required.

Among Fig. 1, 39 is a tunnel, 40 is the rear support of the drilling rig, 41 is the vertical center line of the tunnel, and 42 is a thrust cylinder.

Claims (6)

1, a kind of full-hydraulic multifunctional driller for gas extraction, drainage and discharge, comprise unit head (1), frame (2), planker (3), chuck (4), water pigtail (5), drilling rod (6), clamper (7), column frame (8) and support bar (9), column frame (8) by about two columns (8b) and crossbeam (8a) constitute, unit head (1) is spacing on the guide rail of frame (2) by planker (3), frame (2) is positioned on column frame (8) and the support bar (9), the output of unit head (1) links to each other with drilling rod (6) with water pigtail (5) by chuck (4), it is characterized in that:

A, described frame (2) link to each other with the crossbeam (8a) of column frame (8) by leading screw and nut mechanism (10), crossbeam (8a) two ends of column frame (8) are connected on the column (8b) by leading screw and nut mechanism (11), support bar (9) constitutes by three sections, interlude (9b) is for regulating screw mandrel, and other two sections (9a, 9c) links to each other with interlude (9a) by nut;

The guide rail cross section of B, described frame (2) is rectangular, be provided with the middle base (12) that is inverted T-shaped between the guide rail of the spacing side plate of planker (3) and frame (2), be respectively arranged with copper coin (13,14) between the guide rail lateral surface of middle base (12) and frame (2) and the soffit, be provided with the gap adjustment wedge (15,16) of width and short transverse between the spacing side plate of middle base (12) and planker (3).

2, full-hydraulic multifunctional driller for gas extraction, drainage and discharge according to claim 1, it is characterized in that: described chuck (4) is made of cylinder body (17), piston (18), slip spider (19), slips (20) and hollow shaft (21), two independent oil pressure chambeies (22,23) about being formed with between piston (18) and cylinder body (17) inwall, cylinder body (17) is provided with two hydraulic fluid ports (24,25) and communicates with these two oil pressure chambeies (22,23) respectively, and two bearings (26,27) contacted with piston (18) about slip spider (19) passed through respectively in the axial direction; Water pigtail (5) is made of housing unit (28) and water swivel axis (29), water swivel axis (29) is a tubular construction, water swivel axis (29) is fixedlyed connected with the hollow shaft (21) of chuck (4), hollow shaft (21) is provided with water stream channel (21a) and communicates with intake tunnel (29a) on the water swivel axis (29), in hollow shaft (21), be provided with black box, and the sealing assembly is positioned at the rear of slips (20), described black box is provided with duct (30), and this duct (30) make the water stream channel (21a) on the chuck hollow shaft (21) communicate with the cavity of described black box front side in the chuck hollow shaft (21).

3, full-hydraulic multifunctional driller for gas extraction, drainage and discharge according to claim 2, it is characterized in that: cylinder body (17) left end cap of described chuck (4) is provided with piston guide pin (31), and an end of this piston guide pin (31) stretches in the pilot hole (18a) of piston (18).

4, full-hydraulic multifunctional driller for gas extraction, drainage and discharge according to claim 1, it is characterized in that: on the base (32) of described clamper (7) triangular supports (33) is installed, three slips (34) that are circularly and evenly distributed are installed on support (33), and all independently hydraulic jack (35) is coupled to there being one for each slips (34).

5, full-hydraulic multifunctional driller for gas extraction, drainage and discharge according to claim 4, it is characterized in that: be provided with wedge (36) between the base (32) of described clamper (7) and the support (33), the journal stirrup that stretches out from wedge (36) one ends is connected with adjusting bolt (38) by nut (37), and an end of adjusting bolt (38) matches with the screwed hole on the base (32).

6, full-hydraulic multifunctional driller for gas extraction, drainage and discharge according to claim 1 is characterized in that: the upper flat plate of described planker (3) is medianly zygomorphic respectively to be provided with two spacing side plates.

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